Malicious PDF — malware analysis report

Static analysis result for SHA-256 4052cc78cda53ce1…

MALICIOUS

PDF

34.4 KB Created: 2021-06-18 02:50:27 +07:00 Authoring application: wkhtmltopdf 0.12.6 (via Qt 4.8.7) First seen: 2021-09-29
MD5: abf1cdb2bf33f3eb69c50c8538475a26 SHA-1: d9c5588bf4146b31fd15e3898c82520f277303da SHA-256: 4052cc78cda53ce1ca78d21c07f538eeb466b2d1a244845c50e3f0acdd3e24c0
82 Risk Score

Malware Insights

MITRE ATT&CK
T1566.001 Spearphishing Attachment

The PDF document contains multiple links and references to game hacks and free currency generators, specifically targeting popular games like Roblox and Coin Master. The primary link, http://netcdn.co/app/431946152/how-to-make-decals-free-on-roblox-game-hack, is identified as a redirector lure. While no scripts were explicitly extracted, the PDF structure and embedded URLs suggest a social engineering tactic to redirect users to potentially malicious websites. The ML classifier strongly flagged this PDF as malicious.

Machine Learning

  • Nyx PDF Classifier malicious score 0.9980

Heuristics 4

  • PDF links to a 'free generator / game hack' redirector high PDF_GAME_HACK_REDIRECT_LURE
    PDF's clickable action targets a redirector of the form /app/<id>/<slug>-game-hack — the landing-page shape of a large SEO 'free spins / generator / game hack' lure family that funnels victims through rotating disposable hosts to a malware/scam payload. The multi-link variants also trip ML/link-farm rules; this catches the single-link variants that otherwise score clean.
  • Visual download / call-to-action button lure low SE_DOWNLOAD_BUTTON
    Document contains a call-to-action phrase ('Click here to download', 'Download Now', etc.) — low-signal unless other findings point to a malicious workflow
  • External URI info PDF_URI
    PDF contains an external URL action
  • Embedded URL info EMBEDDED_URL
    One or more URLs were extracted from the document. The URL itself is not a detection — see the per-URL labels for which channel (macro, JS, link annotation, document body, ...) reached each URL.
    URL http://netcdn.co/app/431946152/how-to-make-decals-free-on-roblox-game-hack PDF link annotation
    • https://pn-tapaktuan.go.id/pustaka/repository/robux-life-hack_GM431946152.pdfIn PDF document text
    • https://pn-tapaktuan.go.id/pustaka/repository/coin-master-spin-hack-link_GM406889139.pdfIn PDF document text
    • https://pn-tapaktuan.go.id/pustaka/repository/roblox-free-robux-generator_GM431946152.pdfIn PDF document text
    • https://pn-tapaktuan.go.id/pustaka/repository/best-free-robux-sites_GM431946152.pdfIn PDF document text
    • https://pn-tapaktuan.go.id/pustaka/repository/free-op-minecraft-servers_GM479516143.pdfIn PDF document text
    • https://pn-tapaktuan.go.id/pustaka/repository/earn-rbx_GM431946152.pdfIn PDF document text
    • https://pn-tapaktuan.go.id/pustaka/repository/robux-free-com_GM431946152.pdfIn PDF document text
    • https://pn-tapaktuan.go.id/pustaka/repository/hackear-coin-master-espaol_GM406889139.pdfIn PDF document text
    • https://pn-tapaktuan.go.id/pustaka/repository/robloxheroxyz-free-robux_GM431946152.pdfIn PDF document text
    • https://pn-tapaktuan.go.id/pustaka/repository/free-coins-coin-master-today_GM406889139.pdfIn PDF document text
    • https://pn-tapaktuan.go.id/pustaka/repository/40-free-spins-coin-master_GM406889139.pdfIn PDF document text
    • https://pn-tapaktuan.go.id/pustaka/repository/game-kit-how-to-earn-your-free-robux_GM431946152.pdfIn PDF document text
    • https://pn-tapaktuan.go.id/pustaka/repository/pop-slots-free-vegas-casino-slots-machine-game-coin-master_GM406889139.pdfIn PDF document text
    • https://pn-tapaktuan.go.id/pustaka/repository/reddit-coin-master-free-spins_GM406889139.pdfIn PDF document text
    • https://pn-tapaktuan.go.id/pustaka/repository/robux-hack-code-2021_GM431946152.pdfIn PDF document text
    • https://pn-tapaktuan.go.id/pustaka/repository/how-to-get-free-robux-without-downloading-apps_GM431946152.pdfIn PDF document text
    • https://pn-tapaktuan.go.id/pustaka/repository/how-to-get-free-robux-2021-codes_GM431946152.pdfIn PDF document text
    • https://pn-tapaktuan.go.id/pustaka/repository/coin-master-on-facebook_GM406889139.pdfIn PDF document text
    • https://pn-tapaktuan.go.id/pustaka/repository/free-coins-coin-master-spins_GM406889139.pdfIn PDF document text
    • https://pn-tapaktuan.go.id/pustaka/repository/robux-hack-me_GM431946152.pdfIn PDF document text
    • http://en.wikipedia.org/wiki/MIT_LicenseIn PDF document text

Extracted artifacts 2

Files carved from inside the sample during analysis.

FilenameKindSourceSize
font_00_sfnt_off00002f8f.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x2F8F 22268 bytes
SHA-256: 56245c0429b771ad7cb2757f7e465b13d76e972b70102c787e53b9cbbd02c149
font_01_sfnt_off000060fe.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x60FE 19160 bytes
SHA-256: bfecc8655089f3a8339821a5ebe3e15d5ce452cd91040fd48492a4726de19cf0

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